Answer in brief
CVE-2026-72351 records a Critical severity (CVSS 9.8) vulnerability in gue: validate REMCSUM private option length. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=c1aa8347e73e4092411fbd96cc59531fb7e76d04 <158b9995d3c87f3b93f5c22df54a12e12a3438b3 || >=c1aa8347e73e4092411fbd96cc59531fb7e76d04 <7c6876ec1b227261b51803f784c7be1b2242a1a0 || >=c1aa8347e73e4092411fbd96cc59531fb7e76d04 <2c4de9988e9ddc760b750d6b6e701c35ff60ad14 || >=c1aa8347e73e4092411fbd96cc59531fb7e76d04 <2a99224c120823987e4d829726f4ecb33e03fc1e || >=c1aa8347e73e4092411fbd96cc59531fb7e76d04 <61e78679c7c9ca685bff58e4b6348304dc60aafd || >=c1aa8347e73e4092411fbd96cc59531fb7e76d04 <4a4a1d41c6e901e773bcf795f562a47fa71f692a || >=c1aa8347e73e4092411fbd96cc59531fb7e76d04 <f618cbe9b24cd0202004d2db781d5f80ab77037f || >=c1aa8347e73e4092411fbd96cc59531fb7e76d04 <d335dcc6f521571d57117b8deeebc940836e5450 | 158b9995d3c87f3b93f5c22df54a12e12a3438b3, 7c6876ec1b227261b51803f784c7be1b2242a1a0, 2c4de9988e9ddc760b750d6b6e701c35ff60ad14, 2a99224c120823987e4d829726f4ecb33e03fc1e, 61e78679c7c9ca685bff58e4b6348304dc60aafd, 4a4a1d41c6e901e773bcf795f562a47fa71f692a, f618cbe9b24cd0202004d2db781d5f80ab77037f, d335dcc6f521571d57117b8deeebc940836e5450 |
| Linux/Linuxgeneric | 3.19 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
In the Linux kernel, the following vulnerability has been resolved: gue: validate REMCSUM private option length GUE private flags can indicate that remote checksum offload metadata is present. The private flags field itself is accounted for by guehdr_flags_len(), but guehdr_priv_flags_len() currently returns 0 even when GUE_PFLAG_REMCSUM is set. This lets a packet with only the private flags field pass validate_gue_flags(), after which gue_remcsum() and gue_gro_remcsum() read the missing REMCSUM start/offset fields from the following bytes. Account for GUE_PLEN_REMCSUM when GUE_PFLAG_REMCSUM is present so that malformed packets are rejected during option validation.
Quoted source text, attributed separately from HOL analysis.